Official NHA Assessment

Race 7: SERVOTECH B STAKES (For All Horses)

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Line Horse
Johnny The Thief
Reference for assessment
Exact Matches
2 / 14
Calculated = Official
Close Matches
4 / 14
Within 2 points
Significant Diffs
8 / 14
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Winter Games         4    62.5    1    0.00     1.5   100   93           93    -7
2    Kitchakal            5    55.5    2    0.60     0.0   86    87           87    +1
3    Johnny The Thief     2    60.0    3    1.10     0.0   95    95           95    +0
4    Diani                5    61.5    4    2.50     0.0   97    96           96    -1
5    Wiccan Warrior       2    54.5    5    3.40     0.0   83    81           81    -2
6    Rollo The Viking     3    61.5    6    4.30     2.5   97    89           89    -8
7    Down By The River    2    60.0    7    5.30     0.0   95    91           91    -4
8    Officer In Command   4    55.5    8    5.70     1.5   87    79           79    -8
9    Cleartherunway       3    54.0    9    5.85     2.5   88    74           78    -10
10   Kanaal Skater        2    57.0    10   6.05     0.0   94    85           85    -9
11   Uzwano               3    61.5    11   6.85     2.5   96    89           89    -7
12   Wild At War          3    58.5    12   10.65    2.5   92    83           83    -9
13   The Shepherd         3    61.5    13   12.85    2.5   97    89           89    -8
14   Mr Hotstepper        2    55.5    14   15.35    0.0   87    82           82    -5
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Winter Games 100 103 93 +10 1.5 -
2 Kitchakal 86 86 87 -1 0.0 -
3 Johnny The Thief Line 95 95 95 ✓ Match 0.0
4 Diani 97 96 96 ✓ Match 0.0 -
5 Wiccan Warrior 83 80 81 -1 0.0 -
6 Rollo The Viking 97 96 89 +7 2.5 -
7 Down By The River 95 95 91 +4 0.0 -
8 Officer In Command 87 86 79 +7 1.5 -
9 Cleartherunway 88 88 78 +10 2.5 -
10 Kanaal Skater 94 93 85 +8 0.0 -
11 Uzwano 96 96 89 +7 2.5 -
12 Wild At War 92 92 83 +9 2.5 -
13 The Shepherd 97 97 89 +8 2.5 -
14 Mr Hotstepper 87 87 82 +5 0.0 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points